Not governed by reason: an unreasonable attitude. (adjective)
Exceeding reasonable limits; immoderate: unreasonable demands. See Synonyms at excessive. (adjective)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "unreasonable" in a sentence
"Because the term "unreasonable" is a little vague, the decision about these rate increases is regulated at the state level."
"Democrat had proposed a 25 percent tax on what they called unreasonable profits raked in by the five biggest U.S. oil companies."
"And that is this tax on what they call unreasonable profits from the oil companies."